Coupling device.



No. 683,3!2. Patented'Sept. 24, I901.

' J. MAFHIUABDT.

COUPLING DEVICE.

(Application filed Nov. 20, 1900.) (No Model.) 2 Sheet-Sheet I.

zzz/ zzeasea No. 683,312. Patented Sept. 24, I90].

' J. MAROUARDT.

COUPLING DEVICE.

(Application filed Nov. 20, 1900.)

(N9 Mode'l.)

2 Sheets-Sheet 2.

Mum M W/lW/UWIV/ Zdz'irzeG 22 Z4 Z5 M22182)" cii'zrywdi h A Z NITE STATES JOSEPH MARQUARDT,

OF NEW YORK, N. Y.

COUPLING DEVI-CE.

SIPECIFICATION fcmningpart of Letters Patent No. 683,312, dated $eptember 24, 1901.

Application filed November 20,1900. Serial No. 37,152. (No model.)

To ctZZ whom it may concern.-

Be it known that I, J osnPH'MARoUAnDr, a

citizen of the United States, residing at New York, in the county of New York and State of New York, have invented new and useful Improvements in Coupling Devices, of which the following is a specification.

This invention relates to certain new and useful improvements in coupling devices, more particularly detachable couplings for obtaining mechanical connections between conducting devices carrying wires forming a part of an electrical circuit, connecting together pipe sections for conveying water, steam, or other fluid, and also for attaching a pipe to a reservoir, chamber, or other places.

The device is extremely simple in its construction, strong, durable, and efficient in its use, and comparatively inexpensive to manufacture; and the invention consists in the novel combination and arrangement of parts hereinafter more specifically described, illustrated in the accompanying drawings, and particularly pointed out in the claims hereunto appended. I

In describing the invention in detail reference is bad to the accompanying drawings,

forming a part of this specification, wherein like numerals of reference indicate corresponding parts throughout the several views, and in which- Figure 1 is a side elevation of the coupling device detached from a pair of conductors or pipes. Fig. 2 is a like View with the coupling device attached to the conductors or pipes. Fig. 3 is a cross-section of the fastening-nut. Fig. 4 is a side elevation, partly in section, of the coupling device and socket. Fig. dis a like View with the socket arranged obliquely. Fig. 6 is a like view with the socket externally screw threaded and a nut attached thereto. Fig. 7 is a like view with the sockets substantially L-shaped. Fig. 8 is a like view with the end of the coupling device provided with a stop-flange and a gasket. Fig. 9 is a like view with the coupling device formed with a supporting-flange. Fig. 10 is a side elevation of a modified form of coupling which is split or slitted from end to end.

Referring to the drawings by reference-um morals, 1 and 2 denote the pipe-sections,which are connected together by my new and improved coupling, consisting of a hollow cylindrical sheet-metal body having the internally and externally screw-threaded flaring split ends 2 and 3, connected together by a central portion 4 of smaller diameter than the split ends. The central portion 4 is usually crimped to contract the same for decreasing its diameter. Mounted upon the sheet-metal body is a pair of fastening-nuts 5, each provided with an opening flaring outwardly somewhat and having the walls thereof screwthreaded, as at 6. The nuts 5 are adapted to engage the screw-threads of thesplit ends for contracting the same to engage and connect a pair of pipe-sections together, and when it is desired to uncouple the sections of the pipe the nuts are moved to the central portion 5, which being of less diameter than the ends permits the latter to expand, and the pipesections can be removed. The split ends of the coupling, as before stated, are flared outwardly, so when contracted around the ends of the pipe by means of the nut the ends will securely clamp around the pipe and prevent the displacement or removal of the latter until the nuts are loosened.

The coupling may be provided with one flaring split end 7 instead of two and terminate at its inner-end with a crimped portion 8 of smaller diameter, upon which is mounted the fastening-nut 9 when not in engagement with the split end 7 for connecting the pipe-section thereto. The crimped portion 8 terminates in a flaring end 10, substantially spherical in contour, in which is mounted the substantially spherical end 11 of the socket 12, provided with internal screw-threads 13. This construction forms a universal joint and permits the sheet-metal body to move to various positions, and it is particularly adapted for coupling a pipe-section to a reservoir or chamber. The socket 12 instead of extending vertically, as in Figs. 4: and 6, may extend obliquely, as in Fig. 5, or at a right angle to the spherical end 11, as in Fig. 7.

The reference-numeral 14L denotes an exter nally-screw-threaded bushing to which the socket 12 is connected.

The reference 15 denotes a round pipe to which the coupling is connected.

I may dispense with the bushing 14 and provide the socket 12 with external screwthreads for attaching the same directly to the nut 17, as in Fig. 6, and the inner face of the coupling device may, if desired, be coated with a suitable adhesive composition which may adhere to the conductor or pipe to prevent the latter from slipping. Instead of forming one end of the body of the coupling split or spherical the same may be formed with a stop-flange 18, provided witha gasket 19, as shown in Fig. 8, or the same may be formed with a supporting-flange for connecting the threaded-pipe bushing 21 thereto, as in Fig. 9.

- By providing a fiarin g split end in the manner as hereinloefore referred to the same can be made to expand to fit various diameters of at their inner end in the central portion 24 of smaller diameter. The coupling, as shown, is split or slitted entirely from end to end, as at 26, and is provided with a pair of fastening-nuts 25. This form of coupling is adapted for use in connection with spiral tubing used for electrical conductors, the internal spiral screw-threads of the coupling making the latter readily adaptable for engagement with the spiral tubing.

It is thought the many advantages of my improved coupling can be readily understood from the foregoing description taken in connection with the accompanying drawings, and it will be noted that various changes may be made in the details of construction without departing from the general spirit of my invention.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination with a socket provided with a hollow spherical portion, of a coupling device comprising in its construction a hollow sheet-metal body having a spherical shaped end adapted to embrace the spherical portion of the socket,a longitudinally-extending' split eXternally-screw-threaded flaring end and a portion interposed between the two ends and of less diameter than the split ends.

2. A coupling device comprising a sheetmetal body portion having an internally and externally screw-threaded split end terminating in a portion of smaller diameter, and a nut for contracting said split end.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

J OSEPH- MARQUARDT. Witnesses:

HERMAN BENZ, HENRY WENWVA'IZ; 

